1, controller board with red oil 2, experienced design and copy service 3, fast delivery ... Specificationproviding OEM service to all sorts of printed circuit board assembly1Layer1-30 layer2MaterialFR-4,CEM-1,CEM-3, ... Free,FR-1,FR-23Board thickness0.2mm-7mm4Max.finished board side1500mm*500mm5Min.drilled hole size0.5mm6Min.line width0. ... ,CQC,SGS15profiling punchingRouting,V-CUT,Beveling led writing board